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: how much warning do we get? >> nasa tracks these things. they're able to track 90% of the asteroids that could come close to us. but in this case, there was really no warning. people don't know what's going on. >> brian: i remember in the video game, you could shoot an asteroid out of the sky. i know in armageddon, in the movies, bruce willis and ben affleck were able to -- who else was in that? were able to stop it. is that what we're going to have to do at some point? >> nasa does track these things and they have the capability to stop them before they come close to earth. >> brian: lasers? >> all sorts of things. >> steve: there has been a nasa plan to send some sort of ship onto an asteroid, but once again, the asteroid that's going to come between us and some of our satellites later today, that's going to be far away, right? >> it's relatively close. the closest they've come in centuries. so that's why people are a little nervous. but no, it's not going to hit us. >> alisyn: let us know if there is ever one coming, all right? >> brian: even if we're in sports or in an interview
? >> nasa has a program to search for these objects and we've done a good job at finding the large ones. we put the priority on finding the large one first. the one that hit on friday was really a tiny asteroid, pretty small. >> anna: it's wild that this tiny one caused this much damage. you say mostly what you're looking for are the ones that are 400 feet in size and up, right? >> yes. a city block and larger. those are ones that would reach the surface. the one that hit over russia was broken up by the atmosphere. so there was only the damage from the shock wave. the larger ones, if they reach the surface in one piece, can cause great damage. >> peter: when you talk about the larger ones, what are we talking about? something as big as a kilometer? do those exist? >> oh, yes. oh, yes. and that's about a half mile. nasa has done a good job of finding 95% of those ones. the idea is to find them many, many years before they could hit the earth and calculate when and where the hazard is and if there is a hazard sometime in the future, then we could possibly do something about it. >> steve: now
Search Results 0 to 3 of about 4 (some duplicates have been removed)

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